Eclipta Alba (False Daisy) is a herb that has traditionally been used in Ayurvedic medicine for being a liver tonic (for which it is one of the more effective herbs apparently) and having beneficial effects on diabetes, eye health, and hair growth.
In regards to these claims, it appears to have some anti-diabetic effects in animal studies with the mechanism of action not yet known. Hair regrowth has been noted in repeated studies with the petroleum ether extract mostly, and its potency rivals that of Minoxidil at 2% solution; combination thrapy of Eclipta Alba with two other herbs (Citrullus Colocynthis and Cuscuta Reflexa) has outperformed Minoxidil according to one study.
Eye health does not have any direct studies on it despite its historical claims, although the one human intervention noted that 7.5% of the sample consuming 3g of the leaves daily claimed they had better eyesight; this study was blinded, and constitutes the only evidence for eye health claims. In a way it is promising (3g of the leaves themselves over 60 days improving eye health even when paricipants were unaware this could be an effect of treatment) but it does not constitute sufficient evidence in and of itself.
Beyond the possible eye/hair benefits and the liver protection, other possible benefits of Eclipta Alba are lessened anger (two animal studies, moderate oral doses), pain reduction (dose dependent, which outperfomed Aspirin when consumed at higher doses of 500mg/kg rats; 80mg/kg ethanolic extract in humans) a reduction in blood pressure, diuretic effects, with at least one study suggesting some benefit to the immune system (increasing macrophage and white blood cell activity).
A possibly promising herb for wellness and beauty, but requires more studies on it.